No purge alarm is the second of two (with the defaced label being the first...)

Third is one of my personal pet peeves (freestanding cylinder with no restraint...)

Also,

It was suggested to me that I was incorrect about the zone valve being piped backwards.

I was going to fire back that it is to be installed per mfg's instructions, and that the mfg would require left to right installation to locate the gauge on the downstream side, and have that gauge visible through the transparent openings in the otherwise opaque window...

As it turns out, this particular zone valve had dual ports and a large window (allowing clear view of the gauge in either orientation), and plainly states in the literature "May be plumbed left to right or right to left".

So, I was wrong on that initial post regarding the zone valve. (Thanks to Al for bringing that up to me...)